July 2006

Rev 5

1/11

11

LCP1521S/LCP152DEE

ASD (Application Specific Devices)

Programmable transient voltage suppressor for SLIC protection

Features

Description

These devices have been especially designed

to protect new high voltage, as well as classical

SLICs, against transient overvoltages.

Positive overvoltages are clamped by 2 diodes.

Negative surges are suppressed by 2 thyristors,

through the gate.

These components present a very low gate

current consumption on printed circuit board

during the firing phase.

Benefits

TRISILs™ are not subject to ageing and provide a

fail safe mode in short circuit for a better level of

protection. Trisils are used to ensure equipment

meets various standards such as UL60950,

IEC950 / CSA C22.2, UL1459 and FCC part 68.

Trisils have UL94 V0 approved resin (Trisils are

UL497B approved [file: E136224]).

TM: TRISIL is a trademark of STMicroelectronics

Order codes

Figure 1.

LCP1521S Functional diagram

Figure 2.

LCP152DEE Functional diagram

Part Number

Marking

LCP1521S

CP152S

LCP1521SRL

CP152S

LCP152DEERL

LCP152

SO-8

LCP1521S

QFN 3x3 6 leads

LCP152DEE

TIP

GATE

NC

RING

TIP

GND

RING

GND

1

TIP

TIP

GATE

GND

NC

RING

RING

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